Electrical preheating attachment for automobile intake-manifolds



G. T. NEWELL; JR. ELECTBICAL FREHEATING ATTACHMENT FOR AUTOMOBILE INTAKE MANIFOLDS.

APPLICATION FILED FEB. 5, I920- 1,344,242 PatehtedJune22', 1920.

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UNITED STATES PATENT GFFICE.

GEORGE T. NENELL, 51%., OF BEVERLY, NEl V JERSEY.

ELECTRICAL PREHEATING AT'IACHMENT FOB, AUTOMOBILE INTAKE-MANIFOLDS.

Application filed. February 5, 181250.

f Y I i 10 a .Z M2720! at may concern.

Be it known that l, Gnoncn T. NnwnLL,

Jr., a citizen of the United States of Amen ica, residingat Beverly, Burlington county, State of New Jersey, have invented certain new and useful Imprmcments in Electrical lreheating Attachments for Automobile lntake-Mani folds, of which the following is a full, clear, and exact description.

This invention relates to a device applicable to the intake manifold of internal combustion motors for preheating explosive mixtures. ()ne of the objects of my invention is to provide means to facilitate the starting of motors in cold weather, at which time vaporization of explosive. mixtures is slow.

To carry out my invention, 1 provide an electrically heated cartridge or plug insertible in an intake manifold and positioned to lie in the path of the incoming explosive mixture so that it will. not only preheat the mixture but break up the same or divide the flow thereof.

I will now proceed to describe my invention in detail and point out the novel features thereof in the appended claims, reference being had to the accompanying drawing, wherein Figure 1 is a diagrammatic view of an internal combustion motor, the intake of which is provided with my improvement;

Fig. 2 is an enlarged sectional detail view of the preheater, a portion of an intake manifold and preferred form of switch for closing the circuit for sane; and

Fig. 3 is a sectional view of a modified form of tip for the preheater.

In the drawing, Fig. 7. illustrates diagranri-- matically, a motor 3 ha ring the usual intake manifold t and carburtter :3. My improved device consists of a metallic casing or chamher 6 closed at the bottom as at 7 and having a, lining 8 of some non-conducting heat rcs'isting material, preferably mica. Vvithin the chamber I place a resistance coil 9 having leads l0 and 11. The leads are threaded through a plug 13 of heat resisting electrically non-conducting material having passages 14 and 15 for the leads l0 and 11. After the coil and. plug have been placed in the chamber, l seal the upper end '16 of each passage with some nonconducting material.

- such as condensite, to prevent water fron seeping through said passage into the chamber whereby the 601i might be short cir- Speeification of Letters Iatent.

Serial No. 356,353.

cuited with the lead 10. The plug will fit the casing tightly, but will be removable. To hold the plug in place 1 preferably provide same with a head l8 through which a 'lastening screw 19 is-passed to engage the head 20 of the chamber 6. The chamber will be preferably provided with threads 21 to engage a threaded opening in the manifold l. The preheatcr will be preferably attached to the top wall 252 of the manifold 4: directly opposite the duct 23 which is com mon to both branches 24. and 25 of the manifold. As the chamber 6 extends well into the manifold, it will tend to divide the current of an infiowing explosive mixture and tend to break it up, besides providing a heated member to vaporize same.

To facilitate the breaking up of the current, I may provide the chamber at the bottom. thereof with a pointed projection 26, which may be made out of metal formed integral with the chamber or a part attached thereto, as shown in Fig. 3. The

projection may also be formed out of lava or other refractory material to retain heat, thereby forming a vaporizer which will be heated by conduct-ion after the motor has been running long enough to heat the manifold.

to establish a circuit for a relatively short period, just enough to heat chamber 6. After the switch has been released, the spring will open same: hence it willlie impossible to accidentally leave the switch closed after the motor has been started.

The heated chamber will preheat the incoming cold mixture, thereby vaporizing same,

which will cause the motor to start easily: To attach a separable tip or tip of material different from the material of the chamber,

' I provide said chamber with a threaded stud 30 to engage a threaded opening 31 in the separable tip indicated by 32 in Fig. 3.

Having described my invention, what I claim and desire to secure by Letters Patcut is:

l. in combination, an intake manifold consisting of a duct for the passage of a Micing toward said duct, and aprojection carried by the chamber at. its lower end to part the flow of an incoming combustible mixture. I

3. A preheater for she manifolds of gaso lene motors consisting of an electrically heated chamber and a removable tip extending therefrom.

Signed at blew York city N. Y., this 2 day of February, 1920.

GEQHGE T. NEWELL, Ju. Wimesses MA URIGE Becca, EDWARD A; JARVIS. 

